by Carnegie Institution of Washington. Dept. of Terrestrial Magnetism.
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Scientific results of cruise VII of the ...
Earth-current results at Tucson Magnetic...
I. Ionospheric research at College, Alas...
Land and ocean magnetic observations, 19...
Description of the earth's main magnetic...
Magnetic results from Watheroo Observato...
Terrestrial magnetism
The scientific papers
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1983 tail-era data series
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Deutsche Südpolar-Expedition, 1901-1903